128023872

Names of 128023872

• Cardinal: 128023872 can be written as One hundred twenty-eight million, twenty-three thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.28023872 × 10⁸

Factors of 128023872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 726

Divisors of 128023872

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 3 4 6 8 12 16 17 24 32 34 48 51 61 64 68 96 102 122 136 183 192 204 244 272 366 408 488 544 643 732 816 976 1037 1088 1286 1464 1632 1929 1952 2074 2572 2928 3111 3264 3858 3904 4148 5144 5856 6222 7716 8296 10288 10931 11712 12444 15432 16592 20576 21862 24888 30864 32793 33184 39223 41152 43724 49776 61728 65586 66368 78446 87448 99552 117669 123456 131172 156892 174896 199104 235338 262344 313784 349792 470676 524688 627568 666791 699584 941352 1049376 1255136 1333582 1882704 2000373 2098752 2510272 2667164 3765408 4000746 5334328 7530816 8001492 10668656 16002984 21337312 32005968 42674624 64011936 128023872
• Sum of all divisors σ(n): 365101632
• Sum of proper divisors (its aliquot sum) s(n): 237077760
• 128023872 is an abundant number, because the sum of its proper divisors (237077760) is greater than itself. Its abundance is 109053888

Bases of 128023872

• Binary: 111101000010111110101000000₂
• Hexadecimal: 0x7A17D40
• Base-36: 247ZUO

Squares and roots of 128023872

• 128023872 squared (128023872²) is 16390111801872384
• 128023872 cubed (128023872³) is 2098325575388599449550848
• The square root of 128023872 is 11314.7634531173
• The cube root of 128023872 is 503.9997480473

Scales and comparisons

• 128,023,872 seconds is equal to 4 years, 3 weeks, 4 days, 18 hours, 11 minutes, 12 seconds.
• To count from 1 to 128,023,872 would take you about six years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 128023872 cubic inches would be around 42 feet tall.

Recreational maths with 128023872

• 128023872 backwards is 278320821
• The number of decimal digits it has is: 9
• The sum of 128023872's digits is 33
• More coming soon!